y \x- 1.5 = y \( 1+ 1/9)x①
y÷x-2 = 280÷( 1+ 1/9)x+(y-280)÷( 1+ 1/9)( 1+ 1/6)x②
Get from (1)
y= 15x③
Substitute ③ into ② to get.
13 = 280×9÷ 10x+27( 15x-280)÷35x
solve
x=25.2
y= 10x=252
A: The distance between a:AB and Shenzhen is 252 kilometers.
Senior one's self-summary at the end of last semester is 800 words 1
Time is like a reflection in the water, and a sc